The problem seems to be that no one, including Paul, seems to give sufficient fucks to really want a real solution.
Paul's "Hey, let's send everyone to a third-world country!" is not really a plan, but more a wild idea you'd come up with in the first five minutes of a 72-hour planning session spent to flesh it out.
To get this in the range of an actual plan that people can take seriously, Paul would need to come up with an actual country. Is the Syndicate conquering North Korea, Sudan, Iran, Vlatava, what? Any particular country is going to have specific costs, benefits and relationships to others in the region, and it's the specific details that matter.
That's even before the issue that trying to sell "Hey, let's all invade some random country" to the Syndicate before you actually flesh things out has a high probability of--if they take that proposal seriously--them picking out a country on their own that may or may not work with your plans.
The larger issue is that you can't have a compromise without large chunks of both sides being invested in the compromise solution.
* The primary stumbling block to dealing with the Syndicate is that the heroes can't attack them without risking collateral damage to people they care about. So, Plan "Let's isolate the Syndicate in a country full of people we are explicitly saying we don't give a fuck about" is an obvious prelude to just obliterating that country once all of the Syndicate are isolated there, if the heroes aren't serious about this being a final resolution.
* The primary stumbling block to the Syndicate taking back power is that they're currently on the back foot, and need time to regroup. So, from the heroes' POV, letting the Syndicate escape, heal up, and have time to build their power back up is an obvious prelude to a Round 2 at a time of the Syndicate's choosing, if the Syndicate isn't serious about this being a final resolution.
You essentially need large chunks of both sides for whom the Syndicate setting up shop as rulers of Country X is an actual good outcome they want to happen, as opposed to what we have, which is this being an outcome that literally no one seems to desire.
There's also the incongruity that you literally have Paul giving Batman shit (fairly gratuitously, given the guy isn't there) for letting criminals go and not just executing them at the same time as he's trying to convince the heroes that the right thing to do is to let an entire group of criminals go and not just executing them. I mean, c'mon, Paul, pick a lane and stick with it.